While Junior and Tani are at an opera show they witness a murder-for-hire hit on a Chinese triad leader.

At a local hospital the stolen car was found along with a trail of blood leading to a doctor's parking spot who didn't show up for work.

The doctor's car is tracked to a warehouse where Five-0 along with the Honolulu Police Department (HPD) plan to raid but the hitman commits suicide before they can arrest him.

Also, Jerry informs the team that he decided to move on from Five-0 to write a book that he didn't want to put off until it's too late.

[4] The episode also marks the first appearance for Katrina Law who joined as a series regular to replace Garcia.

[5] Law was cast as Quinn Liu, a former Army CID Staff Sergeant demoted for insubordination.